Laravel connects to the production postgres database through PDO,
so the runtime interpreter must include pdo_pgsql. Without it,
tide-migrate fails on activation with 'could not find driver' and
phpfpm-tide never starts.
Exposes the laravel backend behind phpfpm + nginx and the vue
frontend as a static vhost. Wires postgres, runtime tmpfiles for
laravel's writable storage/ and bootstrap/cache/, and a oneshot
tide-migrate service for migrations and config caching.
